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hole assembly design 钻具组合设计
This is the BHA[bottom hole assembly] log. 这是井下钻具组合的记录本。
Make up bottom hole assembly (BHA). 组合下部钻具。
Please pull out of hole and change bottom hole assembly! 请起钻,换下部钻具结构!
Considering the design parameters effect on the drilling tendency,the conception of drilling tendency angle was proposed as an evaluation index for the bottom hole assembly(BHA) design. 考虑钻具的设计参数对钻进趋势的影响,提出了钻进趋势角的概念,以此作为底部钻具组合设计效果的评价指标。
DF-DMC has used 3D-solid design, assembly design, explosive-assembly design, parameterized design and achieved the integration of CAD/CAM on C/F. 模具公司在开发此项技术中采用了三维实体设计技术、装配设计技术、参数化设计技术和总成爆炸图设计技术，实现了检具CAD/CAM的一体化。
A kind of rotary steering stabilizer used in a common rotary bottom hole assembly to control well path was developed. 在普通旋转钻具的基础上,研制了一种旋转的近钻头稳定器,它可以将钻柱稳定在井眼截面的需要位置,以控制井眼轨道。
The basic assumptions, equations and boundary conditions for bottom hole assembly (BHA) analysis were discussed. 讨论了下部钻具组合分析的基本假设、基本方程和相应的边界条件。
Based on practical usage, this paper describes the working principle of float paving which must be observed in assembly design. 摘要本文从实际应用出发，阐述了在摊铺机总体设计中应遵循的浮动摊铺工作原理及针对摊铺机的工作特点而研究的一些设计理论。
Independent assembly design is used for the upper and bottom corrugating rolls for easy assembly and unassembly and replacing. 成套拆装，便于快捷更换;
With the progress of drilling technology, bottom hole assembly (BHA) has been developed rapidly to control well trajectory. 随着钻井技术的进步，以控制井眼轨道为目的的下部钻具组合发展迅速。
The development and applying of CIMS(Computer Integrated Manufacture System) and CE(Concurrent Engineering) are giving assembly design a more highly requirement. 计算机集成制造系统CIMS和并行工程CE技术的发展和应用，对装配设计提出了更高的要求。
A mechanical model of bottom hole assembly (BHA) with eccentric bits is established and the solution of this model was given by means of numerical method. 采用静力分析的方法,建立了偏心钻头底部钻具组合的力学模型,并完成了对力学模型的求解。应用数值计算方法,分析了偏心钻头底部钻具组合的受力和变形特性。
G Boothroyd and P. Dewhurst of University of Massachusetts firstly gave this terminology when they applied a method to evaluate the performance of product assembly design. DFA这一术语，最早是由美国马萨诸塞大学(University of Massachusetts)的G Boothroyd和P.
The tangency point of Bottom Hole Assembly is located at where the drill string just touches the wall of the borehole, and the contact force is zero here. 在计算底部钻具组合的受力和变形时,以前一般都是按弯矩为零的条件来确定其上切点的位置。
The collaboration related issues, such as asynchronous collaborative design, synchronous collaborative design and collaborative assembly design, are analyzed. 在协同技术方面，集中分析了异步协同设计、同步协同设计和协同装配设计；
The system included five modules which were the finite element analysis of workpiece,virtual assembly design of Tooling, kinematic simulation and project management. 该系统包括工序件的有限元分析、端拾器的虚拟装配设计、运动仿真、系统维护和项目管理等模块。
Free floating ball and chain assembly designed to stop damage by livestock. 自由浮动浮球和链式装置,用于防止家畜的破坏。
Make up bottom hole assembly. 组合下部钻具。
His strength in a crisis is an ace in the hole. 临危不惧是他的看家本领。